CN105461296B - 一种高bs低损耗锰锌铁氧体磁性材料及其制备方法 - Google Patents
一种高bs低损耗锰锌铁氧体磁性材料及其制备方法 Download PDFInfo
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- 239000000696 magnetic material Substances 0.000 title claims abstract description 21
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 19
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 18
- 239000011572 manganese Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims description 12
- 238000002560 therapeutic procedure Methods 0.000 claims abstract description 33
- 239000004615 ingredient Substances 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 9
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 8
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 8
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 8
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 8
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 13
- 239000004576 sand Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 7
- 239000011236 particulate material Substances 0.000 claims description 6
- 238000003801 milling Methods 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- UPWOEMHINGJHOB-UHFFFAOYSA-N cobalt(III) oxide Inorganic materials O=[Co]O[Co]=O UPWOEMHINGJHOB-UHFFFAOYSA-N 0.000 abstract description 3
- 238000002242 deionisation method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
本发明公开了一种高BS低损耗锰锌铁氧体磁性材料，包括主体组分、第一添加组分和第二添加组分，所述主体组分包括：Fe2O3 54mol%～60mol%、ZnO 1.5mol%～4mol%、K2CO3 0.05mol%～0.2mol%、余下为MnO%，各组分之和为100mol%；所述第一添加组分，各成分按主体组分总重量的百分数计，由CaCO3 0.05wt％～0.20 wt％、SiO2 0.01wt％～0.03wt%或WO3 0.05wt％～0.20 wt％中的两种或三种的组合而成；所述第二添加组分，各成分按主体组分总重量的百分数计，由TiO2 0.10wt％～0.20 wt％和/或Co2O3 0.20wt％～0.4wt%构成。
Description
技术领域
本发明涉及一种MnZn铁氧体磁性材料。
背景技术
随着信息技术的不断发展,电子整机系统向小型轻量化、平面贴装化等方向发展，开关电源的小型化也是势在必行，除了高频化以外另一个小型化的重要途径提高电源变压器的工作Bm，这方面主要依靠基中磁性材料的发展和进步，通过 不断的研究和开发提高材料的BS。
发明内容
本发明要解决的技术问题是克服现有的难题，提供了一种25℃~120℃范围内的BS在500mT以上、25℃时达620mT以上的高BS低损耗锰锌铁氧体磁性材料；
本发明的另一目的是提供上述高BS低损耗锰锌铁氧体磁性材料的制备工艺。
为了解决上述技术问题，本发明提供了如下的技术方案：
一种高BS低损耗锰锌铁氧体磁性材料，包括主体组分、第一添加组分和第二添加组分，
所述主体组分包括：Fe2O3 54mol%～60mol%、ZnO 1.5mol%～4mol%、K2CO3 0.05mol%～0.2mol%、余下为MnO，各组分之和为100mol%；
所述第一添加组分，各成分按主体组分总重量的百分数计，由CaCO3 0.05wt％～0.20 wt％、SiO2 0.01wt％～0.03wt%或WO3 0.05wt％～0.20 wt％中的两种或三种的组合而成；
所述第二添加组分，各成分按主体组分总重量的百分数计，由TiO2 0.10wt％～0.20 wt％和/或Co2O3 0.20wt％～0.4wt%构成。
优选的，所述主体组分为包括：Fe2O3 56mol%、ZnO 2.7mol%、K2CO3 0.1mol%、MnO41.2mol%。
优选的，所述第一添加组分，各成分按主体组分总重量的百分数计由0.05～0.12wt％的CaCO3、0.01～0.02wt%的SiO2 或0.10～0.2 wt％的WO3 中的两种或三种的组合而成。
进一步优选的，所述第一添加组分，各成分按主体组分总重量的百分数计，由0.1wt％的CaCO3 、0.015wt%的SiO2 和0.10 wt％的WO3 三种组合而成。
优选的，所述第二添加组分，各成分按主体组分总重量的百分数计，由0.15 wt％的TiO2和/或0.30wt%的Co2O3构成。
进一步优选的，所述第二添加组分为0.15 wt％的TiO2。
上述的高BS低损耗锰锌铁氧体磁性材料的制备工艺，
1）按配方，称取三种主体组分投入砂磨机中，加水，砂磨20~30 分钟，抽至搅拌机中，加入PVA 溶液，搅拌2 小时后，进行喷雾干燥；将干燥好的红色粉料在800-950℃的温度下预烧1~2 小时，得到预烧料；
2）称取预烧料加入砂磨机中，按重量比分别加入第一添加组分、第二添加组分，及水，砂磨1~1.5小时，砂磨后抽至搅拌机，并加入PVA 溶液，搅拌2小时，进行二次喷雾造粒，得到颗粒料；用压机将颗粒料压制成生坯，再将生坯置于1250~1350℃的温度下，3~6%的氧分压下保温烧结3~5 小时，即可得到本发明高BS低损耗锰锌铁氧体磁性材料的磁芯。
优选的，所述步骤1）中，加入主体组分总重量50wt%的去离子水；所述PVA 溶液浓度为8~9%，优选加入量为主体组分总重量的10wt%。
优选的，所述步骤2）中，加入第一添加组分和第二添加组分总重量50wt%的去离子水；所述PVA 溶液浓度为8~9%，优选加入量为第一添加组分和第二添加组分总重量的10wt%。
本发明有益效果：
本发明通过配方、添加物、烧结工艺的控制，得到在25℃~120℃范围内BS很高的特性，同时具有较低的功率损耗，应用于对体积要求小、高集成度的场合，适合于各种电磁应用领域。
本发明实现了通过材料配方和工艺技术的突破，提高了磁性材料在25℃~120℃范围内的BS，在25℃~120℃范围内BS在500mT以上，25℃时达620mT以上；同时，本发明材料具有很高的居里温度，320℃以上，适用于各恶劣环境，可以应用于如汽车电子、路政设施、航空航天等场合。
本发明材料在工作温工范围内，各温区都有较低的损耗，相比其它常规材料更节能。采用本发明材料在100KHz下功率耗损耗PL很低，
PL ≤500mW/cm3 （100KHz、200mT 100℃）
BS≥500mT （25℃~120℃，1194A/m）
BS≥620 mT（25℃，1194A/m）
具体实施方式
以下对本发明的优选实施例进行说明，应当理解，此处所描述的优选实施例仅用于说明和解释本发明，并不用于限定本发明。
实施例1
一种高BS低损耗锰锌铁氧体磁性材料，各组分参见表1。
其制备方法为：
称取主体组分投入砂磨机中，加入 50wt%的去离子水砂磨20~30 分钟，抽至搅拌机中，加入主体组分重量的10wt%的浓度为8~9%PVA 溶液，搅拌2 小时后，进行喷雾干燥。将干燥好的红色粉料在800-950℃的温度下预烧1~2 小时，得到预烧料。称取预烧料加入砂磨机中，按重量比分别加入第一添加组分、第二添加组分，及添加组分总重的50wt%的去离子水，砂磨1~1.5小时，砂磨后抽至搅拌机，并加入添加组分总重的10wt%的浓度为8~9%PVA 溶液，搅拌2小时，进行二次喷雾造粒，得到颗粒料。用压机将颗粒料压制外径、内径、厚度一定尺寸的生坯。将环形生坯置于1250~1350℃ 的温度下，3~6%的氧分压下保温烧结3~5 小时，得到所需磁芯。
实施例2
一种高BS低损耗锰锌铁氧体磁性材料，各组分参见表1。
其制备方法参见实施例1。
实施例3
一种高BS低损耗锰锌铁氧体磁性材料，各组分参见表1。
其制备方法参见实施例1。
实施例4
一种高BS低损耗锰锌铁氧体磁性材料，各组分参见表1。
其制备方法参见实施例1。
实施例5
一种高BS低损耗锰锌铁氧体磁性材料，各组分参见表1。
其制备方法参见实施例1。
实施例6
一种高BS低损耗锰锌铁氧体磁性材料，各组分参见表1。
其制备方法参见实施例1。
Fe2O3 54mol%～60mol%、ZnO 1.5mol%～4mol%、K2CO3 0.05mol%～0.2mol%、余下为MnO，
所述第一添加组分，CaCO3 0.05wt％～0.20 wt％、SiO2 0.01wt％～0.03wt%或WO30.05wt％～0.20 wt％；
所述第二添加组分，由TiO2 0.10wt％～0.20 wt％和/或Co2O3 0.20wt％～0.4wt%构成。
优选的，所述主体组分为包括：Fe2O3 56mol%、ZnO 2.7mol%、K2CO3 0.1mol%、MnO41.2mol%。
优选的，所述第一添加组分，各成分按主体组分总重量的百分数计由0.05～0.12wt％的CaCO3、0.01～0.02wt%的SiO2 或0.10～0.2 wt％的WO3 中的两种或三种的组合而成。
进一步优选的，所述第一添加组分，各成分按主体组分总重量的百分数计，由0.1wt％的CaCO3 、0.015wt%的SiO2 和0.10 wt％的WO3 三种组合而成。
优选的，所述第二添加组分，各成分按主体组分总重量的百分数计，由0.15 wt％的TiO2和/或0.30wt%的Co2O3构成。
进一步优选的，所述第二添加组分为0.15 wt％的TiO2。
表1：
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
Claims (3)
1.一种高BS低损耗锰锌铁氧体磁性材料，其特征在于：包括主体组分、第一添加组分和第二添加组分，
所述主体组分包括：Fe2O3 56 mol%、ZnO 2.7 mol%、K2CO3 0.1 mol%、MnO 41.2 mol%；
所述第一添加组分，各成分按主体组分总重量的百分数计，由CaCO3 0.1 wt%、SiO20.015 wt%和WO3 0.1 wt%组合而成；
所述第二添加组分，各成分按主体组分总重量的百分数计，由TiO2 0.15 wt%构成。
2.根据权利要求1所述的高BS低损耗锰锌铁氧体磁性材料的制备工艺，其特征在于：
1）按配方，称取四种主体组分投入砂磨机中，加水，砂磨20～30 分钟，抽至搅拌机中，加入PVA 溶液，搅拌2 小时后，进行喷雾干燥；将干燥好的红色粉料在800～950℃的温度下预烧1～2 小时，得到预烧料；
2）称取预烧料加入砂磨机中，按重量比分别加入第一添加组分、第二添加组分，及水，砂磨1～1 .5小时，砂磨后抽至搅拌机，并加入PVA 溶液，搅拌2小时，进行二次喷雾造粒，得到颗粒料；用压机将颗粒料压制成生坯，再将生坯置于1250～1350℃的温度下，3～6%的氧分压下保温烧结3～5 小时，即可得到高BS低损耗锰锌铁氧体磁性材料的磁芯。
3.根据权利要求2所述的高BS低损耗锰锌铁氧体磁性材料的制备工艺，其特征在于：所述步骤1）中，加入主体组分总重量50%的去离子水；所述PVA 溶液浓度为8～9%，加入量为主体组分总重量的10%。
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